Multibeam by Metasurface Antennas
| Autor: | Stefano Maci, David Gonzalez-Ovejero, Goutam Chattopadhyay, G. Minatti |
|---|---|
| Přispěvatelé: | Institut d'Électronique et des Technologies du numéRique (IETR), Nantes Université (NU)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Università degli Studi di Siena = University of Siena (UNISI), 4000111496/14/NL/GLC/al, European Space Agency ESA-ESTEC, Noordwijk, The Netherlands 'Low Complexity Data Downlink Antenna', W911NF-15-1-0528, Army Research Laboratory, Jet Propulsion Laboratory, California Institute of Technology under a Contract with National Aeronauticsand Space Administration, Marie Curie International Outgoing Fellowship within the 7th European Community Framework Programme, Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Université de Rennes 1 (UR1), California Institute of Technology (CALTECH)-NASA |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Computer science
Aperture Acoustics Antenna efficiency leaky waves metasurface (MTS) antennas 02 engineering and technology Method of moments (statistics) Superposition principle Optics 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Electrical impedance ComputingMilieux_MISCELLANEOUS business.industry 020206 networking & telecommunications 021001 nanoscience & nanotechnology [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism Amplitude Surface wave Modulation Physics::Accelerator Physics 0210 nano-technology business Beam (structure) |
| Zdroj: | IEEE Transactions on Antennas and Propagation IEEE Transactions on Antennas and Propagation, Institute of Electrical and Electronics Engineers, 2017, 65 (6), pp.2923-2930. ⟨10.1109/TAP.2017.2670622⟩ IEEE Transactions on Antennas and Propagation, 2017, 65 (6), pp.2923-2930. ⟨10.1109/TAP.2017.2670622⟩ |
| ISSN: | 0018-926X |
| DOI: | 10.1109/TAP.2017.2670622⟩ |
| Popis: | We explore various possibilities for designing multibeam antennas using a single metasurface (MTS) aperture. Both single-source and multisource feeding schemes are considered. For the single-source case, two approaches are investigated. In the first one, the MTS aperture is divided into several angular sectors, each one devoted to the formation of a beam in a given direction. In the second approach, the whole aperture is shared by a superposition of individual modulations, which correspond to those required to obtain beams in the desired set of directions. It is shown that the latter solution provides beams with a higher gain. The configuration based on a multisource feeding scheme is also tailored by a superposition of modulation patterns. The main advantage of the latter approach is the possibility of having one independent beam at a time when each of the sources are active, as opposed to the single-source case where all the beams coexist at the same time. Closed-form expressions are provided for the MTS surface impedance in each of the proposed solutions. The design equations include appropriate amplitude tapering to improve the beam efficiency. Numerical results based on the method of moments are presented for validation. |
| Databáze: | OpenAIRE |
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